llvm-project

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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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#include <pthread.h>
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#include <stdio.h>
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#include <stddef.h>
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void *Thread(void *a) {
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  ((int*)a)[0]++;
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  barrier_wait(&barrier);
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  return NULL;
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}
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int main() {
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  barrier_init(&barrier, 2);
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  int *p = new int(42);
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  pthread_t t;
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  pthread_create(&t, NULL, Thread, p);
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  barrier_wait(&barrier);
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  p[0]++;
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  pthread_join(t, NULL);
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  delete p;
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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